FirefoxAccountSessionSharedPrefsStore.java 文件源码

/**
 * @throws FailedToLoadSessionException if we're unable to load the account.
 * @return a FirefoxAccount.
 */
@NonNull
@AnyThread
FirefoxAccountSession loadSession() throws FailedToLoadSessionException {
    if (sharedPrefs.getInt(KEY_VERSION, -1) < 0) { throw new FailedToLoadSessionException("account does not exist"); }

    final State state;
    try {
        final StateLabel stateLabel = State.StateLabel.valueOf(sharedPrefs.getString(KEY_STATE_LABEL, null));
        final ExtendedJSONObject stateJSON = new ExtendedJSONObject(sharedPrefs.getString(KEY_STATE_JSON, null));
        state = StateFactory.fromJSONObject(stateLabel, stateJSON);
    } catch (final NoSuchAlgorithmException | IOException | NonObjectJSONException | InvalidKeySpecException | IllegalArgumentException e) {
        throw new FailedToLoadSessionException("unable to restore account state", e);
    }

    final String endpointConfigLabel = sharedPrefs.getString(KEY_ENDPOINT_CONFIG_LABEL, "");
    final FirefoxAccountEndpointConfig endpointConfig;
    switch (endpointConfigLabel) { // We should probably use enums over Strings, but it wasn't worth my time.
        case LABEL_STABLE_DEV: endpointConfig = FirefoxAccountEndpointConfig.getStableDev(); break;
        case LABEL_LATEST_DEV: endpointConfig = FirefoxAccountEndpointConfig.getLatestDev(); break;
        case LABEL_STAGE: endpointConfig = FirefoxAccountEndpointConfig.getStage(); break;
        case LABEL_PRODUCTION: endpointConfig = FirefoxAccountEndpointConfig.getProduction(); break;
        default: throw new FailedToLoadSessionException("unable to restore account - unknown endpoint label: " + endpointConfigLabel);
    }

    final String email = sharedPrefs.getString(KEY_EMAIL, null);
    final String uid = sharedPrefs.getString(KEY_UID, null);
    final FirefoxAccount firefoxAccount = new FirefoxAccount(email, uid, state, endpointConfig);

    final String applicationName = sharedPrefs.getString(KEY_APPLICATION_NAME, null);

    return new FirefoxAccountSession(firefoxAccount, applicationName);
}